In a retentive timer, which bit represents the Done status?

In a retentive timer, which bit represents the Done status?

• A. .ACC
• B. .DN
• C. .PRE
• D. .EN

Answer: (B)

The Done status is represented by the DN bit. In a retentive timer, DN goes high when the accumulated time reaches the preset value, signaling that the timer has completed its delay. Unlike other timer bits, DN acts as a completion flag and typically latches high until the timer is reset, which is why it’s the indicator of “Done.” The other bits have different roles: ACC holds the current elapsed (accumulated) time, PRE stores the target delay, and EN indicates whether the timer is currently enabled to count.

The Done status is represented by the DN bit. In a retentive timer, DN goes high when the accumulated time reaches the preset value, signaling that the timer has completed its delay. Unlike other timer bits, DN acts as a completion flag and typically latches high until the timer is reset, which is why it’s the indicator of “Done.” The other bits have different roles: ACC holds the current elapsed (accumulated) time, PRE stores the target delay, and EN indicates whether the timer is currently enabled to count.